/Engine/Source/Runtime/TypedElementRuntime/Public/Elements/Framework/TypedElementSelectionSet.h
Test whether there selected elements, optionally filtering to elements that implement the given interface.
bool HasSelectedElements ( const [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UInterface](API\Runtime\CoreUObject\UObject\UInterface) > InBaseInterfaceType ) const